Patents by Inventor Philip James Ridout

Philip James Ridout has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 4098608
    Abstract: In a mixture of metal powders from which ferrous alloy articles may be made by the process of powder metallurgy, the mixture consisting of the following in percentages by weight; nickel, 0.5 to 4%, manganese, 0.5 to 6%, carbon (graphite), 0.05 to 1.5%, copper, if present, up to 5%, boron, if present, up to 0.4%, iron and usual impurities, balance to 100%, the improvement consisting in that the nickel and manganese are in the form of a powdered binary alloy having a nickel to manganese ratio by weight in the range 15 : 85 to 65 : 35 and all of said powdered alloy passes through a 400 mesh B.S.S. sieve.
    Type: Grant
    Filed: November 8, 1976
    Date of Patent: July 4, 1978
    Assignee: B.S.A. Sintered Components Limited
    Inventors: Michael Thomas Matty, Philip James Ridout